# -*- coding: utf-8 -*-
# Tkinter 进行GUI编程

from tkinter import *
import tkinter.messagebox as messagebox

class Application(Frame):
	def __init__(self,master=None):
		Frame.__init__(self,master)
		self.pack()
		self.createWidgets()
	def createWidgets(self):
		self.helloLabel = Label(self,text='Hello,world!')
		self.helloLabel.pack() # 把widget 加入到父容器中，并实现布局
		self.quitButton = Button(self,text='Quit',command=self.quit)
		self.quitButton.pack()

		self.nameInput = Entry(self)
		self.nameInput.pack()
		self.alertButton = Button(self,text = 'Hello',command=self.hello)
		self.alertButton.pack()
	def hello(self):
		name = self.nameInput.get() or 'world'
		messagebox.showinfo('Message','Hello,%s' % name)
		
app = Application()
#设置窗口标题
app.master.title('Hello World')
#朱消息循环
app.mainloop()